wifi issue - Samsung Galaxy S9 Questions & Answers

wifi turning off when screen is off android 10 i dont see option wifi sleep when screen off. its not in wifi settings. when screen is wake up i see no wifi but after 3sec its connected again. i did default reset, wifi reset settings. dont fixed. software reinstalled in service.

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[Q] Wi-fi keeps disconnecting after a while after turning off screen

Before I start I want to make this clear
Yes, my wifi policy is on "never" and I have pressed menu>save rather than just exiting out.
[Q] When my screen shuts off, after around 10-20 minutes my wifi disconnects (i can tell by checking router status on my comptuer to see attached devices) and when I turn on my phone and unlock it will go from 3g > wifi right away. The reason I want wifi on constantly is because the wifi radio uses less power than the 3g radio.
Now I'm aware that some roms have an option to turn off radio for 3g/wifi when not in use and will turn them on when the system needs to update/sync. However, my wifi is set to "never" sleep and there is no "always enable mobile data" option on my rom. I'm wondering why it will disconnect my wifi when my policy is set to never.
ROM:
MIUI 0.12.11 (0.12.3 fixed the wifi disconnect problem, but 0.12.11 is a newer rom)
bcblend 2.6.32.25 cfs stable (SBC custom)

[Q] wifi issue

Firmware B111, kicking out of wifi when screen goes off. Wifi is set up "never go off", but still it goes.
I see it on "Smart Profiles",(tried "Profile Flow" also), as I made a rule based on home wifi to switch BT off, when I'm at home.
After some time, when screen goes off, it turns BT on. When I take the phone, it "see" wifi and switches BT off again. In log file of Profile Flow I can see, how the "HOME" profile goes on and off every 5-10 or 15 minutes.
So, the problem is- why WIFI does not keep on all the time. All the possible battery savers are taken off, but still no constant wireless network connection during phone sleep...
And my wifi based profiles don't work as they suppose to...
double check power save option?
VectraT said:
Firmware B111, kicking out of wifi when screen goes off. Wifi is set up "never go off", but still it goes.
I see it on "Smart Profiles",(tried "Profile Flow" also), as I made a rule based on home wifi to switch BT off, when I'm at home.
After some time, when screen goes off, it turns BT on. When I take the phone, it "see" wifi and switches BT off again. In log file of Profile Flow I can see, how the "HOME" profile goes on and off every 5-10 or 15 minutes.
So, the problem is- why WIFI does not keep on all the time. All the possible battery savers are taken off, but still no constant wireless network connection during phone sleep...
And my wifi based profiles don't work as they suppose to...
Click to expand...
Click to collapse
I had a similar issue but when I switch Power Plan option from Smart to Normal in Power Manager, it seems it's ok now
VectraT said:
Firmware B111, kicking out of wifi when screen goes off. Wifi is set up "never go off", but still it goes.
I see it on "Smart Profiles",(tried "Profile Flow" also), as I made a rule based on home wifi to switch BT off, when I'm at home.
After some time, when screen goes off, it turns BT on. When I take the phone, it "see" wifi and switches BT off again. In log file of Profile Flow I can see, how the "HOME" profile goes on and off every 5-10 or 15 minutes.
So, the problem is- why WIFI does not keep on all the time. All the possible battery savers are taken off, but still no constant wireless network connection during phone sleep...
And my wifi based profiles don't work as they suppose to...
Click to expand...
Click to collapse
it needs tweaking .. if u have plenty bloatware or crapware apps no wonder ..
wifi
brain00 said:
I had a similar issue but when I switch Power Plan option from Smart to Normal in Power Manager, it seems it's ok now
Click to expand...
Click to collapse
Tried that once, but no luck...I'll try again!
About crapware...don't know- all apps are from Play store...

Wi-Fi always on?

I never have my Wi-Fi on, but when I look at the battery stats, it indicates that Wi-Fi is constantly awake.
Anyone else see this behavior? I also have the Wi-Fi location scanning disabled.
I thought there was an additional option somewhere that lets the phone scan for something using wifi, even when wifi is turned off. I believe it is called wifi scanning and is under location settings. Someone correct me if I am wrong.
Try going to settings, location, then menu and scanning. There you can turn off scanning for wifi and/or bluetooth. I believe that is what forces it on but others can correct me.
Edit, sorry didn't see someone answered the same above me.
Yes, I have that disabled, but the battery stats still say Wi-Fi is always active.
Here's a screenshot of what I'm talking about
https://www.dropbox.com/s/vyw92eunbjkx9a2/Screenshot_20160510-132650.png?dl=0
I switched to airplane mode for a few minutes, which is reflected with the cellular signal activity. The Wi-Fi activity is still showing as on.
I checked with GSam battery monitor, and Wi-Fi doesn't appear to be actually on.
Have you tried the network reset?
I have disabled wifi/BT scanning, keep wifi on only when plugg-in, and then I go to "backup & reset" then reset the network. Now my Wifi does seem to be "not" always on.
screenshot: http://imgur.com/LutQOTA
Tried it. Still shows Wi-Fi as always on. Ugh
I have the same problem.
Maybe a just a display bug in settings/power menu?
Yes I do see the same. This is very strange and not very nice, when you want some feature off it should be turned off.
I had this problem too. Turns out it was viber which kept WiFi awake.
You need to disable wi-fi scanning.

WiFi doesn't turn off properly

Hi. Today I have discovered what was causing my battery life bad. So, if I turn off WiFi when I'm connected to router - it will turn off properly. When I turn on wifi and turn off (without connecting) it will stay in 'scanning mode' even if the icon says it is turned off. Is there any possible fix for that?

wifi issue 10 android

why wifi turning off when screen is locked, i have android 10. Firmware reinstalled in service, i did two times reset, one lucky, next still same problem ,wifi goes off when screen is off, battery saver is off. one lucky time i did reset and not goes to off when screen is off, next time i did reset, and still same happens life before , not turned saver battery. where problem? in a5 2017 i know was be wifi sleep policy and i see three options in wifi settings (keep wifi when screen off,not keep when off , keep when charging), and i enabled battery saver and i set to wifi sleep never in a5 2017, so battery saver is not issue like was in n9
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and i see in wifi name mac adress : ramdomizde mac adress or Phone adress mac. what they are? by default it set to randomized
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since android 9 wifi option gone to not keep wifi when screen is off ... it always to keep. on my n8 was always on when screen is off, and the battery saver mode is on and dont any problem like discconected whem screem is off...

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